Some improvements in 'luaconf.h'

Added '#if !defined' in some definitions to allow external definitions;
more comments; other small changes.

1 files changed, 1 insertions, 1 deletions

diff --git a/lutf8lib.c b/lutf8lib.c
index 16cd68ad..9786b60c 100644
--- a/lutf8lib.c
+++ b/lutf8lib.c
@@ -28,7 +28,7 @@
 /*
 ** Integer type for decoded UTF-8 values; MAXUTF needs 31 bits.
 */
-#if LUAI_BITSINT >= 31
+#if ((UINT_MAX >> 15) >> 15) >= 1
 typedef	unsigned int utfint;
 #else
 typedef unsigned long utfint;